GLSA
Bodhisattva
Joined: 13 Jun 2003
Posts: 4087
Location: Dresden, Germany
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 Posted: Wed Nov 24, 2004 10:06 am Post subject: [ GLSA 200411-32 ] phpBB: Remote command execution |
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Gentoo Linux Security Advisory
Title: phpBB: Remote command execution (GLSA 200411-32)
Severity: high
Exploitable: remote
Date: November 24, 2004
Updated: May 22, 2006
Bug(s): #71681
ID: 200411-32
Synopsis
phpBB contains a vulnerability which allows a remote attacker to execute arbitrary commands with the rights of the web server user.
Background
phpBB is an Open Source bulletin board package.
Affected Packages
Package: www-apps/phpbb
Vulnerable: < 2.0.10
Unaffected: >= 2.0.11
Architectures: All supported architectures
Description
phpBB contains a vulnerability in the highlighting code and several vulnerabilities in the username handling code.
Impact
An attacker can exploit the highlighting vulnerability to access the PHP exec() function without restriction, allowing them to run arbitrary commands with the rights of the web server user (for example the apache user). Furthermore, the username handling vulnerability might be abused to execute SQL statements on the phpBB database.
Workaround
There is a one-line patch which will remediate the remote execution vulnerability. Locate the following block of code in viewtopic.php: | Code: | // // Was a highlight request part of the URI? //
$highlight_match = $highlight = ''; if (isset($HTTP_GET_VARS['highlight'])) { // Split words and phrases
$words = explode(' ', trim(htmlspecialchars(urldecode($HTTP_GET_VARS['highlight'])))); for($i = 0; $i < sizeof($words); $i++) { |
Replace with the following: | Code: | // // Was a highlight request part of the URI? //
$highlight_match = $highlight = ''; if (isset($HTTP_GET_VARS['highlight'])) { // Split words and phrases
$words = explode(' ', trim(htmlspecialchars($HTTP_GET_VARS['highlight']))); for($i = 0; $i < sizeof($words); $i++) { |
Resolution
All phpBB users should upgrade to the latest version to fix all known vulnerabilities: | Code: | # emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/phpbb-2.0.11" |
References
phpBB.com Announcement
CVE-2004-1315
Last edited by GLSA on Sun Jul 30, 2006 4:16 am; edited 4 times in total |
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